Maintenance equipment and maintenance method for hydraulic support of working face with large mining height

Abstract

The invention discloses large mining height working face hydraulic support maintenance equipment and a maintenance method, the large mining height working face hydraulic support maintenance equipment comprises a hoisting device and a work platform, the hoisting device is used for being installed at a shield beam, the hoisting device is connected with the work platform, and the work platform is used for an operator to enter and carry out maintenance operation after hoisting; the working platform comprises a bottom plate and a plurality of side plates, the side plates are arranged on the peripheral side of the bottom plate, and at least part of the side plates can swing relative to the bottom plate so that the working platform can have a lifting state and a working state; in the lifting state, the side plates are turned over above the bottom plate and define an inner cavity above the bottom plate, the inner cavity is used for containing operators in the process that the operation platform is lifted upwards, and in the operation state, at least part of the side plates are turned over to be flush with the bottom plate so as to increase the operation range of the operators. According to the overhauling equipment, an operator can be lifted, so that the operator can overhaul and maintain the joint of the rear part of the top beam and the upper part of the shield beam.

Description

Technical Field

[0001] The invention relates to the technical field of mining equipment, and in particular to a hydraulic support maintenance device for a large mining height working face and a maintenance method. Background Art

[0002] At present, the support height of the hydraulic support of the ultra-large mining height working face can reach 10m, and the distance between the connection position of the rear of the top beam and the upper part of the shield beam of this ultra-large mining height hydraulic support and the base sidewalk can reach 7.5m. Due to the strong mine pressure of the ultra-large mining height working face, during the mining process, the hydraulic support of the ultra-large mining height working face cannot be lowered for a long time for maintenance, which makes the jacks, structural parts, hydraulic systems, circuits, etc. at the above connection positions difficult to repair and maintain. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention proposes a hydraulic support maintenance device for a large mining height working face, which can lift the operator so that the operator can inspect and maintain the connection between the rear of the top beam and the upper part of the shield beam.

[0005] The embodiment of the present invention also provides a maintenance method based on the above-mentioned large mining height working face hydraulic support maintenance equipment.

[0006] The maintenance equipment of the hydraulic support for a large mining height working surface according to the embodiment of the present invention comprises a lifting device and a working platform, wherein the lifting device is used to be installed at the shielding beam, and the lifting device is connected to the working platform and is used to lift the working platform upwards, and the working platform is used for operators to enter and perform maintenance work after lifting;

[0007] The working platform comprises a bottom plate and a plurality of side plates, wherein the plurality of side plates are arranged on the outer peripheral side of the bottom plate, and at least part of the side plates can swing relative to the bottom plate so that the working platform has a lifting state and a working state;

[0008] In the lifting state, a plurality of the side panels are flipped over the bottom plate and form an inner cavity above the bottom plate, and the inner cavity is used to accommodate the operator during the process of lifting the work platform upward. In the working state, at least part of the side panels are flipped over to be flush with the bottom plate to increase the working range of the operator.

[0009] In some embodiments, the multiple side panels include two relatively arranged fixed plates and two relatively arranged movable plates, the fixed plates are fixedly connected to the base plate and are located above the base plate, the movable plates are rotatably mounted on the base plate so that the working platform can be switched to the lifting state or the working state, and each of the fixed plates is connected to the lifting device.

[0010] In some embodiments, the lifting device includes a winch and a lifting rope, the winch is used to be installed at the shielding beam, and the lifting rope is wound around the winch and connected to the fixing plate.

[0011] In some embodiments, the fixing plate is provided with a plurality of sling rope holes and a safety rope hole, the sling rope holes are used to be connected to the sling rope, and the safety rope holes are used to be connected to the safety rope.

[0012] In some embodiments, the plurality of sling holes and the safety rope hole are both disposed on the top side of the fixing plate, and the safety rope hole is disposed between two of the sling holes.

[0013] In some embodiments, there are two lifting devices, and the two lifting devices are used to be arranged at intervals in the width direction of the shielding beam, and the multiple lifting rope holes of the same fixing plate are connected to the lifting rope of the same lifting device.

[0014] In some embodiments, the movable plate is provided with a fixing rope hole, and in the working state, the fixing rope hole is used to be connected to a fixing rope.

[0015] In some embodiments, the two fixed plates are arranged opposite to each other in the width direction of the shield beam, and the two movable plates are arranged opposite to each other in a direction orthogonal to the width direction;

[0016] And / or, the bottom plate is rectangular, the fixed plate is connected to the short side of the bottom plate, and the movable plate is connected to the long side of the bottom plate;

[0017] And / or, the fixing plate is evenly distributed with a plurality of through holes.

[0018] In some embodiments, a plurality of legs are included, and a plurality of sleeves are provided on the bottom side of the base plate. In the working state, the legs are fixed in the sleeves, and the legs are used to support the working platform.

[0019] The maintenance method of the embodiment of the present invention comprises the following steps:

[0020] Switch the working platform to the lifting state and connect it to the lifting device;

[0021] Lifting the working platform upwards by means of the lifting device;

[0022] After the working platform is raised to a set position, the working platform is switched to a working state;

[0023] Connecting a safety rope to the working platform, and connecting a fixing rope to the flipped side panel;

[0024] The maintenance work is completed on the working platform.

[0025] Beneficial effects: The large mining height working face hydraulic support maintenance equipment and maintenance method of the embodiment of the present invention can lift the operator so that the operator can inspect and maintain the connection between the rear of the top beam and the upper part of the shield beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a partial structural schematic diagram of the maintenance equipment according to an embodiment of the present invention.

[0027] Figure 2 It is a schematic diagram of the working platform of the maintenance equipment according to the embodiment of the present invention in a hoisted state.

[0028] Figure 3 It is a schematic diagram of the working platform of the maintenance equipment according to the embodiment of the present invention in the working state.

[0029] Figure 4 It is a schematic diagram of a winch installed on a shield beam according to an embodiment of the present invention.

[0030] Figure 5 Schematic diagram of a sleeve of a base plate according to an embodiment of the present invention.

[0031] Reference numerals:

[0032] 1- lifting device; 11- winch; 12- lifting rope;

[0033] 2-working platform; 21-bottom plate; 211-sleeve; 22-side plate; 221-fixed plate; 2211-hanging rope hole; 2212-safety rope hole; 2213-through hole; 222-movable plate; 2221-fixed rope hole; 23-inner cavity;

[0034] 3- Cover beam. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0037] In the prior art, when the hydraulic support is lowered for maintenance, broken rocks of the overlying rock strata are likely to leak down from the space, which can easily cause accidents such as roof collapse, roof leakage, and rock spalling, which in turn can easily affect production safety and production efficiency.

[0038] In order to avoid the above situation, the related technologies mostly use the method of manually building equal-height working platforms for inspection and maintenance. During the construction of the equal-height platforms, due to the limited sidewalk space of the hydraulic support, workers are required to carry the pre-welded legs and platforms to the work site for assembly. The whole process takes 3 to 4 hours. Secondly, after the working platform is built, the sidewalk is also occupied by the legs, making it difficult for people and materials to pass, which greatly affects production efficiency. In addition, the method of building the working platform also has the problem that the rear part of the top beam cannot be constructed.

[0039] like Figure 1 As shown, the maintenance equipment of the hydraulic support for a large mining height working face (hereinafter referred to as the maintenance equipment) of an embodiment of the present invention includes a lifting device 1 and a working platform 2. The lifting device 1 is used to be installed at the protective beam 3, and the lifting device 1 is connected to the working platform 2 and is used to lift the working platform 2 upwards. The working platform 2 is used for operators to enter and perform maintenance work after lifting.

[0040] The maintenance equipment of the embodiment of the present invention mainly serves the maintenance of the hydraulic support of the large mining height working surface, and the above-mentioned shielding beam 3 is the shielding beam 3 of the hydraulic support of the large mining height working surface. The lifting device 1 can be a device with a lifting function such as a crane. The lifting device 1 can be pre-installed on the shielding beam 3 of each hydraulic support. In some other embodiments, the shielding beam 3 can also only reserve an installation position. When maintenance is required, the lifting device 1 can be installed at the installation position of the corresponding hydraulic support, thereby reducing the overall layout cost.

[0041] The working platform 2 can be a structural member such as a hanging basket, a hanging basket, a platform, etc. The working platform 2 can be suspended under the lifting device 1. When in use, the operator can enter the working platform 2, and then use the lifting device 1 to lift the working platform 2 to the corresponding height position. The operator can stand on the working platform 2 to perform maintenance work.

[0042] like Figure 2 As shown, the working platform 2 includes a bottom plate 21 and a plurality of side plates 22 , wherein the plurality of side plates 22 are arranged on the outer peripheral side of the bottom plate 21 , and at least part of the side plates 22 can swing relative to the bottom plate 21 so that the working platform 2 has a lifting state and an operating state.

[0043] During the process of lifting the work platform 2 upward, the work platform 2 can be switched to the lifting state. Figure 2As shown, the plurality of side panels 22 are turned over on the bottom panel 21 and enclose an inner cavity 23 on the top of the bottom panel 21. The inner cavity 23 is used to accommodate operators during the process of lifting the working platform 2. Thus, the plurality of side panels 22 can play a protective role, preventing the operator from falling from the working platform 2 due to shaking during the lifting process.

[0044] When the working platform 2 is hoisted to a corresponding height position, the working platform 2 can be switched to the working state by flipping the corresponding side plate 22. Figure 3 As shown, some side panels 22 are also generally in a horizontal position and are assembled with the bottom panel 21. The operator can move on the bottom panel 21 and the flipped side panels 22, thereby increasing the operator's operating range.

[0045] In the maintenance equipment of the embodiment of the present invention, the operator performs maintenance work by lifting the working platform 2. Such maintenance method does not occupy the sidewalk of the hydraulic support, that is, during the maintenance process, people, materials, etc. can still pass through the sidewalk, thereby realizing parallel operation of the maintenance process and reducing the impact on production.

[0046] Secondly, since the working platform 2 has an operating state, the operator can have a relatively large operating range in the operating state, thereby meeting the maintenance needs of various positions and improving the operational flexibility of the entire maintenance process.

[0047] In some embodiments, the multiple side panels 22 include two relatively arranged fixed plates 221 and two relatively arranged movable plates 222, the fixed plates 221 are fixedly connected to the base plate 21 and are located above the base plate 21, the movable plates 222 can be rotatably assembled on the base plate 21 so that the working platform 2 can be switched to a lifting state or an operating state, and each fixed plate 221 is connected to the lifting device 1.

[0048] For example, Figure 3 As shown, the work platform 2 can be generally in the shape of a square box, wherein only two fixed plates 221 can be provided, and only two movable plates 222 can be provided, and the two fixed plates 221 can be arranged relative to each other in the left-right direction, and the two movable plates 222 can be arranged relative to each other in the front-back direction. The two fixed plates 221 can be fixedly connected to the bottom plate 21, and the connection method can be integral casting, welding, etc.

[0049] The two movable plates 222 can be rotatably assembled with the base plate 21 through corresponding hinge joints. When the working platform 2 needs to be switched to the lifting state, the two movable plates 222 can be flipped to the top of the base plate 21 and fixedly connected to the two fixed plates 221. The connection method between the movable plates 222 and the fixed plates 221 can be plug-in fixation through pins, etc.

[0050] When the working platform 2 needs to be switched to the working state, the fixed connection between the two movable plates 222 and the fixed plate 221 can be released, and then the two movable plates 222 can be flipped downward, so that the two movable plates 222 can be switched to a position substantially flush with the bottom plate 21.

[0051] It should be noted that when the working platform 2 is switched to the working state, each movable plate 222 and the base plate 21 can be abutted. For example, the movable plate 222 and the base plate 21 can be provided with relatively abutting limit parts, etc., so that the movable plate 222 can be kept in a horizontal position, avoiding the situation where the movable plate 222 flips over.

[0052] The two fixed plates 221 mentioned above can be connected to the lifting device 1, while the two movable plates 222 are not connected to the lifting device 1. Therefore, while meeting the need for lifting upwards through the lifting device 1, it can also avoid the situation where the connection with the lifting device 1 easily restricts the movable plate 222, thereby ensuring the flexibility of the movable plate 222 to flip.

[0053] In some embodiments, Figure 1 As shown, the lifting device 1 includes a winch 11 and a lifting rope 12. The winch 11 is used to be installed at the shield beam 3. The lifting rope 12 is wound around the winch 11 and connected to the fixing plate 221. For example, Figure 4 As shown, the winch 11 can be fixed inside the box of the shielding beam 3. In some other embodiments, the winch 11 can also be fixed on the side guard plates on the left and right sides of the shielding beam 3. The winch 11 is electric. When in use, the winch 11 can be driven to rotate by electric drive, so that the lifting rope 12 can be wound up, and then the working platform 2 can be lifted.

[0054] In some embodiments, the fixing plate 221 is provided with a plurality of hanging rope holes 2211 and a safety rope hole 2212 , the hanging rope hole 2211 is used to be connected to the hanging rope 12 , and the safety rope hole 2212 is used to be connected to the safety rope.

[0055] For example, Figure 3 As shown, the fixing plate 221 may be provided with a plurality of first ears, each of which may be provided with a hanging rope hole 2211. When in use, the hanging rope 12 of the lifting device 1 can be directly passed through the corresponding hanging rope hole 2211 and connected to the corresponding first ear, thereby facilitating the connection and fixation of the hanging rope 12 and the fixing plate 221.

[0056] like Figure 3As shown, a second ear portion may also be provided on the fixing plate 221, and a safety rope hole 2212 may be provided in the second ear portion. When in use, one end of the safety rope may be connected to the hydraulic support, and the other end of the safety rope may pass through the installation rope hole and be connected to the second ear portion. The safety rope may play a role in pulling the working platform 2 when the working platform 2 falls accidentally, thereby enhancing the safety of the maintenance operation process.

[0057] In some embodiments, the plurality of hanging rope holes 2211 and the safety rope hole 2212 are both disposed on the top side of the fixing plate 221, and the safety rope hole 2212 is disposed between two hanging rope holes 2211. Figure 3 As shown, there may be two hanging rope holes 2211, which may be respectively arranged at the front and rear ends of the top edge of the fixing plate 221, and there may be only one installation rope hole, which may be located in the middle of the top edge of the fixing plate 221. Thus, the hanging rope 12 and the safety rope can be symmetrically distributed, thereby enhancing the structural stability of the working platform 2 during use.

[0058] In some embodiments, there are two lifting devices 1 , and the two lifting devices 1 are arranged at intervals in the width direction of the shielding beam 3 , and the multiple lifting rope holes 2211 of the same fixing plate 221 are connected to the lifting rope 12 of the same lifting device 1 .

[0059] For example, Figure 4 As shown, the two winches 11 of the lifting device 1 can be fixed on the left box and the right box of the shield beam 3 respectively, wherein the left winch 11 can lead out two lifting ropes 12 and can be respectively connected to the two lifting rope holes 2211 of the left fixing plate 221, and the right winch 11 can also lead out two lifting ropes 12 and can be respectively connected to the two lifting rope holes 2211 of the right fixing plate 221. Thus, the lifting stability of the working platform 2 is ensured.

[0060] In some embodiments, the movable plate 222 is provided with a fixing rope hole 2221, and in the working state, the fixing rope hole 2221 is used to connect with the fixing rope. Figure 3 As shown, two third ears can be integrally formed on the edge of the movable plate 222 opposite to the hinged position, and the two third ears can be respectively located on the left and right sides of the movable plate 222, and a fixing rope hole 2221 can be provided in each third ear.

[0061] When in use, one end of the fixing rope can be connected to the hydraulic support, specifically, it can be connected to the column and the shield beam 3 through a fixing rope such as a strap, and the other end of the fixing rope can pass through the fixing rope hole 2221 and be connected to the corresponding third ear. The fixing rope can play the role of pulling the movable plate 222, thereby ensuring the structural stability of the working platform 2 in the working state and enhancing the overall bearing capacity.

[0062] In some embodiments, Figure 3 As shown, the two fixed plates 221 are arranged relative to each other in the width direction (left-right direction) of the shield beam 3, and the two movable plates 222 are arranged relative to each other in a direction orthogonal to the width direction. Thus, the working platform 2 has a symmetrical structure in both the hoisting state and the working state, thereby ensuring the overall structural stability.

[0063] In some embodiments, Figure 3 As shown, the bottom plate 21 is rectangular, the fixed plate 221 is connected to the short side of the bottom plate 21, and the movable plate 222 is connected to the long side of the bottom plate 21. As a result, the working platform 2 is generally a rectangular parallelepiped structure, so that the operator can have a larger working range in the front and rear directions of the hydraulic support, and can also fully meet the matching needs of a larger space in the front and rear directions of the hydraulic support.

[0064] In some embodiments, Figure 3 As shown, a plurality of through holes 2213 are evenly distributed on the fixing plate 221. Thus, on the one hand, it can reduce weight, and on the other hand, it can also be used to fix tools.

[0065] In some embodiments, the servicing device includes a plurality of legs, such as Figure 5 As shown, a plurality of sleeves 211 are provided on the bottom side of the bottom plate 21. In the working state, the legs are fixed in the sleeves 211, and the legs are used to support the working platform 2. Specifically, when a welding gun or a jack is needed to work on the working platform 2, the legs can be installed at the corresponding sleeves 211, and the working platform 2 can be supported by the legs, thereby enhancing the bearing capacity of the working platform 2.

[0066] The following describes the maintenance method according to the embodiment of the present invention.

[0067] The maintenance method of the embodiment of the present invention comprises the following steps:

[0068] S1: Switch the work platform 2 to the lifting state and connect it to the lifting device 1. For example, the two movable plates 222 of the work platform 2 can be turned up and fixed to the fixed plate 221, and then the lifting rope 12 of the lifting device 1 can be connected and fixed to the corresponding lifting rope hole 2211 of the fixed plate 221.

[0069] S2: Lift the work platform 2 upwards by the lifting device 1. Specifically, after the operator enters the work platform 2, the winch 11 of the lifting device 1 can be driven to rotate by electric drive, and the work platform 2 can be lifted by winding the lifting rope 12.

[0070] S3: After the work platform 2 is lifted to the set position, the work platform 2 is switched to the working state. For example, when the work platform 2 is lifted to a position (set position) close to the shield beam 3, which can be about 2 meters away from the top beam and meets the construction requirements, the operator on the work platform 2 can flip the two movable plates 222 to both sides.

[0071] S4: Connect the safety rope to the working platform 2, and connect the fixed rope to the flipped side plate 22. Specifically, after both movable plates 222 are flipped outward, connect the safety rope to the safety rope hole 2212, and connect the fixed rope to the fixed rope hole 2221.

[0072] S5: Complete the maintenance work on the working platform 2.

[0073] A specific example of the maintenance equipment according to the embodiment of the present invention is described below.

[0074] The left and right side plates (which can be regarded as fixed plates 221) are welded to the bottom plate 21 to form a base, and the front side plate and the rear side plate (which can be regarded as movable plates 222) are fixed to the base through hinges. In the normal state, the front side plate and the rear side plate are folded, and the hanging basket (which can be regarded as the working platform 2) is in a rectangular parallelepiped shape. Electric winches are welded at appropriate positions (depending on the height of the bracket) of the left and right boxes of the shield beam 3, and each winch 11 can lead out two suspension ropes 12.

[0075] When there is maintenance work, operate the winch 11 to lower the lifting rope 12, and fix the four lifting ropes 12 on the four lifting rope holes 2211 on the left and right side panels respectively. After the staff and equipment enter the hanging basket, fix the safety rope in the safety rope hole 2212. Operate the winch 11 to lift the hanging basket to an appropriate height, open and flatten the front and rear side panels to form a 2000mm×1320mm platform, pass the fixed rope through the four fixed rope holes 2221, and connect it with the bracket column clamp, the shield beam 3 ring, etc. to ensure the stability of the working platform 2. If welding, pinning, etc. are required, the four sleeves 211 need to be connected with the legs, and the platform is erected on the bracket sidewalk to further stabilize the platform.

[0076] By adopting the above structure, a winch 11-basket mechanism is set on the shielding beam 3, so as to realize the maintenance work of the rear part of the top beam of the hydraulic support of the ultra-large mining height working face and the upper part of the shielding beam 3, saving additional manual operation and improving work efficiency.

[0077] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0079] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0081] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0082] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A hydraulic support maintenance equipment for a large mining height working surface, characterized in that: It includes a lifting device and a working platform, wherein the lifting device is used to be installed at the shield beam, and the lifting device is connected to the working platform and is used to lift the working platform upwards, and the working platform is used for operators to enter and perform maintenance work after lifting; The working platform comprises a bottom plate and a plurality of side plates, wherein the plurality of side plates are arranged on the outer peripheral side of the bottom plate, and at least part of the side plates can swing relative to the bottom plate so that the working platform has a lifting state and a working state; In the lifting state, a plurality of the side panels are flipped over the bottom plate and form an inner cavity above the bottom plate, and the inner cavity is used to accommodate the operator during the process of lifting the work platform upward. In the working state, at least part of the side panels are flipped over to be flush with the bottom plate to increase the working range of the operator.

2. The large mining height working face hydraulic support maintenance equipment according to claim 1 is characterized in that: The multiple side plates include two relatively arranged fixed plates and two relatively arranged movable plates, the fixed plates are fixedly connected to the bottom plate and are located above the bottom plate, the movable plates can be rotatably mounted on the bottom plate so that the working platform can be switched to the lifting state or the working state, and each of the fixed plates is connected to the lifting device.

3. The large mining height working face hydraulic support maintenance equipment according to claim 2 is characterized in that: The lifting device comprises a winch and a lifting rope, wherein the winch is used to be installed at the shielding beam, and the lifting rope is wound around the winch and connected to the fixing plate.

4. The large mining height working face hydraulic support maintenance equipment according to claim 3 is characterized in that: The fixing plate is provided with a plurality of lifting rope holes and a safety rope hole, wherein the lifting rope holes are used to be connected to the lifting rope, and the safety rope holes are used to be connected to the safety rope.

5. The large mining height working face hydraulic support maintenance equipment according to claim 4 is characterized in that: The plurality of hanging rope holes and the safety rope hole are all arranged on the top side of the fixing plate, and the safety rope hole is arranged between two of the hanging rope holes.

6. The large mining height working face hydraulic support maintenance equipment according to claim 4 is characterized in that: There are two lifting devices, which are used to be arranged at intervals in the width direction of the shielding beam, and the multiple lifting rope holes of the same fixing plate are connected to the lifting rope of the same lifting device.

7. The large mining height working face hydraulic support maintenance equipment according to claim 2 is characterized in that: The movable plate is provided with a fixing rope hole, and in the working state, the fixing rope hole is used to be connected with a fixing rope.

8. The large mining height working face hydraulic support maintenance equipment according to claim 2 is characterized in that: The two fixed plates are arranged opposite to each other in the width direction of the shield beam, and the two movable plates are arranged opposite to each other in a direction orthogonal to the width direction; And / or, the bottom plate is rectangular, the fixed plate is connected to the short side of the bottom plate, and the movable plate is connected to the long side of the bottom plate; And / or, the fixing plate is evenly distributed with a plurality of through holes.

9. The large mining height working face hydraulic support maintenance equipment according to any one of claims 1 to 8, characterized in that: It comprises a plurality of legs, and a plurality of sleeves are arranged on the bottom side of the base plate. In the working state, the legs are fixed in the sleeves, and the legs are used to support the working platform.

10. A maintenance method for a hydraulic support maintenance device for a large mining height working face based on any one of claims 1 to 9, characterized in that: The following steps are involved: Switch the working platform to the lifting state and connect it to the lifting device; Lifting the working platform upwards by means of the lifting device; After the working platform is raised to a set position, the working platform is switched to a working state; Connecting a safety rope to the working platform, and connecting a fixing rope to the flipped side panel; The maintenance work is completed on the working platform.

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